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Hello !
Many thanks to those who listened to my very first
test with Jason and who sent a report. I am very glad to hear that it
was readable.
I am using the ZL1BPU exciter and was running
between 350 and 450W input to a 15m vertical with two toploading wires 1m
apart
The frequency was more accurate than
expected. I have no means of measuring the
frequency accurately. Calibration has been made against WWV on 10Mhz,
however in normal room temperature.
Unfortunately I cannot receive Jason properly yet.
My old TR7 is too unstable (no "japanese wonders" here). The Drake VFO never
stops drifting completely. When it is fully warmed up (after about 1hour) it
still drifts very slowly up and down about 1hz. Some letters are received OK
followed by garbage and then some letters ok again.
However, I am building a receiver only for 136 and
there I use a VFO running at about 6Mhz divided down to about 244khz
and mix with 136 to an IF of 108khz. This VFO is completely stable in
normal room temperature after about 30min warm up and gives perfect JAson
readability when tested "on the table". However the rx is still in the
experimenting stage mounted on a piece of wood (yes !) and has no AGC
yet.
If anyone is interested in the "appearance" of this
contraption just mail me.
Using equipment in the /5 QTH though is
another matter temperaturewise. Normal temperature wintertime is +5°C indoors so
it takes some time to get a pleasant temperature and to get the gear
stable.
Jim M0MBU:
Yes, I was calling some CQ:s on CW after the Jason
test. This is my very first report that I was being heard in Britain on normal
CW so I am very glad also for that. Unfortunately the noise level with me was
much higher than normal yesterday so I did not hear anything.
The input on normal CW is about 1100W and I get
much more radiated power now when the ground is frozen. The feedpoint
impedance is now ~40ohm compared to slightly above
100ohms normally.
73,
Urban -SM5EUF
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